Dynamic establishment of virtual circuits using...

Details Dynamic establishment of virtual circuits using... Dynamic establishment of virtual circuits using...

2005-11-14

2011-10-25

Wu, Daniel (Department: 2612)

Multiplex communications

Duplex

Transmit/receive interaction control

C370S392000

Reexamination Certificate

active

08045492

ABSTRACT:
The present invention provides a technique for automatically establishing a virtual circuit from one edge device to another through a core network. The virtual circuit may comprise one or more pseudowire segments. These pseudowire segments extend between adjacent edge and core devices within the core network. Pseudowire segments through the core network are automatically stitched together as a setup message is forwarded from a first edge device to a second edge device through the core network. A virtual circuit is established in one direction, and packets are forwarded in an opposite direction. With the present invention, a virtual circuit comprising any number of pseudowire segments, as well as two attachment circuits, may be established in an automatic and efficient manner upon being initiated by the first edge device.

REFERENCES:
patent: 6697329 (2004-02-01), McAllister et al.
patent: 7035259 (2006-04-01), Nomura et al.
patent: 7489695 (2009-02-01), Ayyangar
patent: 2004/014000 (2004-02-01), None
patent: 2004/049644 (2004-06-01), None
International Search Report for PCT/IB2005/003399 mailed Mar. 15, 2006.

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